CN206947961U - A kind of PWM rectifier direct current supply pilot system based on multiplex - Google Patents
A kind of PWM rectifier direct current supply pilot system based on multiplex Download PDFInfo
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- CN206947961U CN206947961U CN201720723077.0U CN201720723077U CN206947961U CN 206947961 U CN206947961 U CN 206947961U CN 201720723077 U CN201720723077 U CN 201720723077U CN 206947961 U CN206947961 U CN 206947961U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
A kind of PWM rectifier direct current supply pilot system based on multiplex is the utility model is related to, including：Three-phase regulator, three-phase transformer, dc source, DC/AC are tested urban rail current transformer, subject motor, shaft coupling, accompany examination motor, AC DC AC to accompany examination current transformer, tractive transformer, single-phase transformer；The dc source is PWM rectifier；The three-phase regulator is connected with external 10kV power networks, the three-phase regulator also connects with three-phase transformer, three-phase transformer also connects with PWM rectifier, PWM rectifier also connects with DC/AC subject urban rail current transformers, DC/AC is tested urban rail current transformer and subject motor connection, subject motor also by shaft coupling and accompanies examination motor connection, examination motor is accompanied to accompany examination current transformer to connect with AC DC AC, AC DC AC accompany examination current transformer to be connected with tractive transformer, tractive transformer also connects with single-phase transformer, and single-phase transformer is additionally coupled to 10kV power networks.
Description
Technical field
The present invention relates to power system to test field, more particularly, to a kind of PWM rectifier direct current based on multiplex
Power supply pilot system.
Background technology
At present, when laboratory carries out the experiment of metro traction combined system, DC power-supply system is whole using uncontrollable diode
Device is flowed, net side power factor is low, harmonic content is big and the irreversible shortcoming of energy because uncontrollable diode rectifier has.
Due to urban rail current transformer, according to the needs of live circuit, its Capacity design also differs, and laboratory carries out metro traction combined system
The electric energy of feedback when urban rail current transformer is braked is consumed during retardation test by external copped wave resistance, causes a large amount of waves of electric energy
Take and need to select corresponding braking resistor resistance size according to the amount of capacity and power supply grade of subject urban rail current transformer.
The content of the invention
The present invention is overcomes at least one defect (deficiency) described in above-mentioned prior art, there is provided a kind of based on multiplex
PWM rectifier direct current supply pilot system.
It is contemplated that at least solves above-mentioned technical problem to a certain extent.
In order to reach above-mentioned technique effect, technical scheme is as follows：
A kind of PWM rectifier direct current supply pilot system based on multiplex, including：Three-phase regulator, three-phase transformer,
Dc source, DC/AC subjects urban rail current transformer, it is tested motor, shaft coupling, accompanies examination motor, AC-DC-AC to accompany examination current transformer, traction
Transformer, single-phase transformer；The dc source is PWM rectifier；The three-phase regulator is connected with external 10kV power networks, institute
State three-phase regulator also to connect with three-phase transformer, three-phase transformer also connects with PWM rectifier, and PWM rectifier is also and DC/AC
Urban rail current transformer connection, DC/AC subject urban rail current transformers and subject motor connection are tested, subject motor also by shaft coupling and is accompanied
Motor connection is tried, accompanies examination motor to accompany examination current transformer to connect with AC-DC-AC, AC-DC-AC accompanies examination current transformer and tractive transformer to connect
Connect, tractive transformer also connects with single-phase transformer, and single-phase transformer is additionally coupled to 10kV power networks.
Preferably, the PWM rectifier includes at least double PWM rectifier.
Preferably, when subject urban rail current transformer is in traction working condition, energy flow direction is followed successively by 10kV power networks, three phase voltage regulating
Device, three-phase transformer, dc source, DC/AC are tested urban rail current transformer, subject motor, shaft coupling, accompany examination motor, AC-DC-AC
Accompany examination current transformer, tractive transformer, single-phase transformer, 10kV power networks.
Preferably, when subject urban rail current transformer is in damped condition, energy flow direction is followed successively by 10kV power networks, single-phase transformation
Device, tractive transformer, AC-DC-AC accompany examination current transformer, accompany examination motor, shaft coupling, subject motor, DC/AC subject urban rail unsteady flows
Device, dc source, three-phase transformer, three-phase regulator, 10kV power networks.
Compared with prior art, the beneficial effect of technical solution of the present invention is：
PWM rectifier direct current supply of this programme based on multiplex, there is provided simulation traction and system needed for subject current transformer
Start building condition, be tested under current transformer damped condition and realize braking energy feedback, realize circulation and energy in whole pilot system energy
Feedback utilize, additionally it is possible to realize net side High Power Factor and low harmonic content.
Brief description of the drawings
Fig. 1 is the schematic diagram of the metro traction combined system pilot system of the present invention program；
Fig. 2 is the PWM rectifier main circuit schematic diagram of the wide-voltage range of the present invention program；
The system that Fig. 3 is the present invention program puts into logical schematic；
Fig. 4 is the plant running logical schematic of the present invention program；
The device that Fig. 5 is the present invention program exits logical schematic；
Fig. 6 is that the subject urban rail current transformer of the present invention program is in the energy flow graph of traction working condition；
Fig. 7 is that the subject urban rail current transformer of the present invention program is in the energy flow graph of damped condition.
Embodiment
Accompanying drawing being given for example only property explanation, it is impossible to be interpreted as the limitation to this patent；
In order to more preferably illustrate the present embodiment, some parts of accompanying drawing have omission, zoomed in or out, and do not represent actual product
Size；
To those skilled in the art, it is to be appreciated that some known features and its explanation, which may be omitted, in accompanying drawing
's.
Technical scheme is described further with reference to the accompanying drawings and examples.
Fig. 1 is the schematic diagram of the metro traction combined system pilot system of the present invention program.As shown in figure 1, one
PWM rectifier direct current supply pilot system of the kind based on multiplex, it is characterised in that including：Three-phase regulator 2, three phase-change pressures
Device 3, dc source, DC/AC are tested urban rail current transformer 5, subject motor 6, shaft coupling, accompany examination motor 7, AC-DC-AC to accompany examination unsteady flow
Device 8, tractive transformer 9, single-phase transformer；The dc source is PWM rectifier 4；The three-phase regulator 2 and external 10KV
Three phase network 1 connects, and the three-phase regulator 2 also connects with three-phase transformer 3, and three-phase transformer 3 also connects with PWM rectifier 4
Connect, PWM rectifier 4 also connects with DC/AC subject urban rail current transformers 5, and DC/AC subject urban rail current transformers 5 and subject motor 6 connect
Connecing, subject motor 6 also by shaft coupling and accompanies examination motor 7 to connect, and accompanies examination motor 7 and AC-DC-AC to accompany examination current transformer 8 to connect,
AC-DC-AC accompanies examination current transformer 8 and tractive transformer 9 to connect, and tractive transformer 9 also connects with single-phase transformer, single-phase transformer
It is additionally coupled to 10KV three phase networks 1.
Cooperated by three-phase regulator 2, three-phase transformer 3 and rectifier, and being capable of maximum capacity performance rectification
(i.e. while the requirement of output voltage is met, collaboration raising input voltage can be realized more high-power etc. the power grade of device
The performance S=3*U*I of level).By user by host computer interface input needed for output voltage grade and power grade, host computer
Control can automate the maximization distribution for realizing energy.
As a preferred embodiment, the PWM rectifier 4 includes at least double PWM rectifier 4.Fig. 2 is present invention side
The main circuit schematic diagram of PWM rectifier 4 of the wide-voltage range of case.Powered, met by triple Parallel opertations of PWM rectifier 4
It is tested current transformer traction and braking power demands.The protection of multiplex scheme be not limited to 3 weights mentioned in invention in parallel or 3 weights and with
Upper parallel connection.
Wherein, three-phase regulator 2：Dc source front end three-phase alternating voltage value is adjusted, it is straight according to subject urban rail current transformer
Flow power supply front-end power demand, there is provided corresponding input voltage.Three-phase transformer 3：Including a secondary side of three-phase transformer 3
Three winding exports.DC/AC is tested current transformer 5：It is tested urban rail current transformer (VVVF inverters).It is tested motor 6：It is tested motor 6.Connection
Axle device：Connection is tested motor 6 and accompanies examination motor 7, realizes that energy mutually passes.Accompany examination motor 7：Examination electricity is accompanied in mutually feeding type pilot system
The equipment of machine 7.AC-DC-AC accompanies examination current transformer 8：Export, can realize including single-phase four-quadrant rectifier and three-phase inverter
Traction and damped condition seamless switching.Tractive transformer 9：Accompany the single-phase transformer of examination current transformer front end tractive transformer 9：Examination is accompanied to become
Flow device front end single-phase transformer.The system that Fig. 3 is the present invention program puts into logical schematic.Fig. 4 is the device of the present invention program
Operation logic schematic diagram.The device that Fig. 5 is the present invention program exits logical schematic.
As a preferred embodiment, Fig. 6 is that the subject urban rail current transformer of the present invention program is in the energy stream of traction working condition
Xiang Tu.When be tested urban rail current transformer be in traction working condition when, energy flow to be followed successively by 10KV three phase networks 1, three-phase regulator 2,
Three-phase transformer 3, dc source, DC/AC are tested urban rail current transformer 5, subject motor 6, shaft coupling, accompany examination motor 7, AC-DC-AC
Accompany examination current transformer 8, tractive transformer 9, single-phase transformer, 10KV three phase networks 1.
As a preferred embodiment, Fig. 7 is that the subject urban rail current transformer of the present invention program is in the energy stream of damped condition
Xiang Tu.When subject urban rail current transformer is in damped condition, energy flow direction is followed successively by 10KV three phase networks 1, single-phase transformer, led
Draw transformer 9, AC-DC-AC accompanies examination current transformer 8, accompanies examination motor 7, shaft coupling, subject motor 6, DC/AC subject urban rail current transformers
5th, dc source, three-phase transformer 3, three-phase regulator 2,10KV three phase networks 1.
PWM rectifier direct current supply of this programme based on multiplex, there is provided simulation traction and system needed for subject current transformer
Start building condition, be tested under current transformer damped condition and realize braking energy feedback, realize circulation and energy in whole pilot system energy
Feedback utilize, additionally it is possible to realize net side High Power Factor and low harmonic content.
Same or analogous label corresponds to same or analogous part；
Position relationship is used for being given for example only property explanation described in accompanying drawing, it is impossible to is interpreted as the limitation to this patent；
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not pair
The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement made within the spirit and principle of invention etc., should be included in the claims in the present invention
Protection domain within.
Claims (4)
- A kind of 1. PWM rectifier direct current supply pilot system based on multiplex, it is characterised in that including：Three-phase regulator, three-phase transformer, dc source, DC/AC are tested urban rail current transformer, subject motor, shaft coupling, accompany examination electricity Machine, AC-DC-AC accompany examination current transformer, tractive transformer, single-phase transformer；The dc source is PWM rectifier；The three-phase regulator is connected with external 10kV power networks, and the three-phase regulator also connects with three-phase transformer, three phase transformations Depressor also connects with PWM rectifier, and PWM rectifier also connects with DC/AC subject urban rail current transformers, DC/AC subject urban rail unsteady flows Device and subject motor connection, subject motor also by shaft coupling and accompany examination motor connection, accompany examination motor and AC-DC-AC to accompany examination to become Device connection is flowed, AC-DC-AC accompanies examination current transformer to be connected with tractive transformer, and tractive transformer also connects with single-phase transformer, single-phase Transformer is additionally coupled to 10kV power networks.
- 2. a kind of PWM rectifier direct current supply pilot system based on multiplex according to claim 1, its feature exist In, including：The PWM rectifier includes at least double PWM rectifier.
- 3. a kind of PWM rectifier direct current supply pilot system based on multiplex according to claim 1, its feature exist In, including：When subject urban rail current transformer is in traction working condition, energy flow direction is followed successively by 10kV power networks, three-phase regulator, three phase-change pressures Device, dc source, DC/AC subjects urban rail current transformer, subject motor, shaft coupling, accompany examination motor, AC-DC-AC accompany examination current transformer, Tractive transformer, single-phase transformer, 10kV power networks.
- 4. a kind of PWM rectifier direct current supply pilot system based on multiplex according to claim 1, its feature exist In, including：When subject urban rail current transformer is in damped condition, energy flow direction is followed successively by 10kV power networks, single-phase transformer, traction voltage transformation Device, AC-DC-AC accompany examination current transformer, accompany examination motor, shaft coupling, subject motor, DC/AC subject urban rail current transformer, dc source, Three-phase transformer, three-phase regulator, 10kV power networks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720723077.0U CN206947961U (en) | 2017-06-21 | 2017-06-21 | A kind of PWM rectifier direct current supply pilot system based on multiplex |
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| CN201720723077.0U CN206947961U (en) | 2017-06-21 | 2017-06-21 | A kind of PWM rectifier direct current supply pilot system based on multiplex |
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| CN206947961U true CN206947961U (en) | 2018-01-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110823589A (en) * | 2018-08-14 | 2020-02-21 | 株洲中车时代电气股份有限公司 | Reverse starting test method and device for traction system |
| CN114290903A (en) * | 2021-12-22 | 2022-04-08 | 中车永济电机有限公司 | Simplified design method of overvoltage protection resistor suitable for locomotive and motor car converter |
-
2017
- 2017-06-21 CN CN201720723077.0U patent/CN206947961U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110823589A (en) * | 2018-08-14 | 2020-02-21 | 株洲中车时代电气股份有限公司 | Reverse starting test method and device for traction system |
| CN110823589B (en) * | 2018-08-14 | 2021-11-19 | 株洲中车时代电气股份有限公司 | Reverse starting test method and device for traction system |
| CN114290903A (en) * | 2021-12-22 | 2022-04-08 | 中车永济电机有限公司 | Simplified design method of overvoltage protection resistor suitable for locomotive and motor car converter |
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